The invention provides a back type heat dissipation device.It mainly includes an air supply unit.The air supply unit is provided with an air supply part on one side and an air inlet part on the other side.The air supply unit is internally provided with an air supply body and a driving body.The central position of the air supply body is connected with the driving body.The peripheral system of the air supply unit is connected with at least one back body；A control unit,The control unit is electrically connected with the driving body.One power supply body,The power supply system is electrically connected with the drive body.So,The user backs the air supply unit to the back of the back through the back body.Then, the control unit starts the drive body to drive the air supply body to rotate.The utility model can effectively achieve the effect of carrying and cooling.本創作係提供一種後背式散熱裝置，主要係包括一送風單元，該送風單元一面設有一送風部另面設有一入風部，該送風單元內部設有一送風體及一驅動體，該送風體之中心位置係與該驅動體相連結，該送風單元周邊係與至少一背體相連結；一控制單元，該控制單元係與該驅動體相電性連接；一供電體，該供電體係與該驅動體相電性連接，如此，使用者透過背體將該送風單元背至於後背部後，再透過該控制單元啟動該驅動體以驅動該送風體轉動，進而有效達到便於攜帶及散熱之功效。
